[alsa-devel] [PATCH 9/9] ALSA: usx2y: usx2yhwdeppcm: use usb_fill_int_urb()

[Sebastian Andrzej Siewior]

Using usb_fill_int_urb() helps to find code which initializes an
URB. A grep for members of the struct (like ->complete) reveal lots
of other things, too.
I'm keeping the transfer-length initialisation in
usX2Y_usbpcm_urbs_start() because I am not certain if this does not
change over time.

Cc: Jaroslav Kysela <perex at perex.cz>
Cc: Takashi Iwai <tiwai at suse.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
---
 sound/usb/usx2y/usx2yhwdeppcm.c | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index 4fd9276b8e50..0a14612f2178 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -325,6 +325,8 @@ static int usX2Y_usbpcm_urbs_allocate(struct snd_usX2Y_substream *subs)
 	/* allocate and initialize data urbs */
 	for (i = 0; i < NRURBS; i++) {
 		struct urb **purb = subs->urb + i;
+		void *buf;
+
 		if (*purb) {
 			usb_kill_urb(*purb);
 			continue;
@@ -334,18 +336,19 @@ static int usX2Y_usbpcm_urbs_allocate(struct snd_usX2Y_substream *subs)
 			usX2Y_usbpcm_urbs_release(subs);
 			return -ENOMEM;
 		}
-		(*purb)->transfer_buffer = is_playback ?
-			subs->usX2Y->hwdep_pcm_shm->playback : (
-				subs->endpoint == 0x8 ?
-				subs->usX2Y->hwdep_pcm_shm->capture0x8 :
-				subs->usX2Y->hwdep_pcm_shm->capture0xA);
+		if (is_playback) {
+			buf = subs->usX2Y->hwdep_pcm_shm->playback;
+		} else {
+			if (subs->endpoint == 0x8)
+				buf = subs->usX2Y->hwdep_pcm_shm->capture0x8;
+			else
+				buf = subs->usX2Y->hwdep_pcm_shm->capture0xA;
+		}
+		usb_fill_int_urb(*purb, dev, pipe, buf,
+				 subs->maxpacksize * nr_of_packs(),
+				 i_usX2Y_usbpcm_subs_startup, subs, 1);
 
-		(*purb)->dev = dev;
-		(*purb)->pipe = pipe;
 		(*purb)->number_of_packets = nr_of_packs();
-		(*purb)->context = subs;
-		(*purb)->interval = 1;
-		(*purb)->complete = i_usX2Y_usbpcm_subs_startup;
 	}
 	return 0;
 }
-- 
2.17.1